无论如何,我正在尝试将Ripple效果用于API< 21,即棒棒糖前设备.从字面意义上讲,就此而言,涟漪效应就是水. 这是我尝试过的.方法很简单.我把三个布局灰色,三个白色,然后另外三个白色和三个灰色然后闭嘴. 但是,实施没有奏效.只有第二个runnable运行且效果未实现. 这是我的activity.java:
package dreamnyc.ripple;import androID.graphics.color;import androID.os.Bundle;import androID.support.v7.app.ActionBaractivity;import androID.util.Log;import androID.vIEw.Menu;import androID.vIEw.MenuItem;import androID.vIEw.VIEw;import androID.Widget.button;import androID.Widget.linearLayout;import androID.Widget.relativeLayout;public class MainActivity extends ActionBaractivity { public String TAG = "okay"; @OverrIDe protected voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentVIEw(R.layout.activity_main); final button b; final relativeLayout la1; final linearLayout la2,la3,la4,la5,la6,la7; la1 = (relativeLayout) findVIEwByID(R.ID.l1); la2 = (linearLayout) findVIEwByID(R.ID.l2); la3 = (linearLayout) findVIEwByID(R.ID.l3); la4 = (linearLayout) findVIEwByID(R.ID.l4); la5 = (linearLayout) findVIEwByID(R.ID.l5); la6 = (linearLayout) findVIEwByID(R.ID.l6); la7 = (linearLayout) findVIEwByID(R.ID.l7); b = (button) findVIEwByID(R.ID.button); b.setonClickListener(new VIEw.OnClickListener() { @OverrIDe public voID onClick(VIEw v) { la7.setBackgroundcolor(color.LTGRAY); final Runnable r1 = new Runnable() { @OverrIDe public voID run() { synchronized (this) { try { la7.setBackgroundcolor(color.WHITE); la6.setBackgroundcolor(color.LTGRAY); la4.setBackgroundcolor(color.LTGRAY); la2.setBackgroundcolor(color.LTGRAY); la5.setBackgroundcolor(color.WHITE); la3.setBackgroundcolor(color.WHITE); la1.setBackgroundcolor(color.WHITE); wait(100); } catch (InterruptedException e) { Log.d(TAG,"exception encountered" + e); } synchronized (this) { try { final Runnable r2 = new Runnable() { @OverrIDe public voID run() { la7.setBackgroundcolor(color.WHITE); la5.setBackgroundcolor(color.LTGRAY); la3.setBackgroundcolor(color.LTGRAY); la1.setBackgroundcolor(color.LTGRAY); la6.setBackgroundcolor(color.WHITE); la4.setBackgroundcolor(color.WHITE); la2.setBackgroundcolor(color.WHITE); } }; wait(10); } catch (InterruptedException e) { e.printstacktrace(); } } } } }; runOnUiThread(r1); } }); } @OverrIDe public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main,menu); return true; } @OverrIDe public boolean onoptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button,so long // as you specify a parent activity in AndroIDManifest.xml. int ID = item.getItemID(); //noinspection SimplifiableIfStatement if (ID == R.ID.action_settings) { return true; } return super.onoptionsItemSelected(item); }}
这是布局:
<relativeLayout xmlns:androID="http://schemas.androID.com/apk/res/androID" xmlns:tools="http://schemas.androID.com/tools" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:paddingleft="@dimen/activity_horizontal_margin" androID:paddingRight="@dimen/activity_horizontal_margin" androID:paddingtop="@dimen/activity_vertical_margin" androID:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity" androID:ID="@+ID/l1"> <linearLayout androID:orIEntation="vertical" androID:layout_wIDth="fill_parent" androID:layout_height="fill_parent" androID:layout_centerVertical="true" androID:layout_centerHorizontal="true" androID:padding="15dp" androID:ID="@+ID/l2"> <linearLayout androID:orIEntation="vertical" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:layout_gravity="center_horizontal" androID:padding="15dp" androID:ID="@+ID/l3"> <linearLayout androID:orIEntation="vertical" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:layout_gravity="center_horizontal" androID:padding="15dp" androID:ID="@+ID/l4"> <linearLayout androID:orIEntation="vertical" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:layout_gravity="center_horizontal" androID:padding="15dp" androID:ID="@+ID/l5"> <linearLayout androID:orIEntation="vertical" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:layout_gravity="center_horizontal" androID:padding="15dp" androID:ID="@+ID/l6"> <linearLayout androID:orIEntation="vertical" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:layout_gravity="center" androID:padding="15dp" androID:ID="@+ID/l7"> <button androID:layout_wIDth="fill_parent" androID:layout_height="wrap_content" androID:text="Ripple" androID:ID="@+ID/button" androID:layout_margintop="130dp" /> </linearLayout> </linearLayout> </linearLayout> </linearLayout> </linearLayout> </linearLayout></relativeLayout>
请转到您使用的IDE,看看会发生什么,无论是否有第二次运行.
以下是截图:
单独运行一个:One
单独运行两个:Two
两者:Same as one,though both.
One
解决方法 对于棒棒糖(API> 21),请使用此选项<?xml version="1.0" enCoding="utf-8"?><ripple xmlns:androID="http://schemas.androID.com/apk/res/androID" xmlns:tools="http://schemas.androID.com/tools" androID:color="?androID:colorAccent" tools:targetAPI="lollipop"> <item androID:drawable="@color/cancel_btn_clr" /> <!-- default --> <item androID:ID="@androID:ID/mask"> <shape androID:shape="rectangle"> <solID androID:color="?androID:colorAccent" /> </shape> </item></ripple>
对于棒棒糖前(API <21)
<?xml version="1.0" enCoding="utf-8"?><selector xmlns:androID="http://schemas.androID.com/apk/res/androID"> <item androID:state_pressed="true"> <shape> <solID androID:color="@color/colorAccent"></solID> </shape> </item> <item> <shape> <solID androID:color="@color/cancel_btn_clr"></solID> </shape> </item></selector>总结
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